The cost-effective solution for continuous, contactless dust and opacity measurement at medium to high concentrations in dry flue and process gases.


Functionality: Transmission



  • Continuous dust measurement
  • Contactless measurement
  • Automatic control functions
  • High-quality corrosion-free plastic housing and a wide ambient temperature range



  • Easy installation for opacity monitoring and reliable emission monitoring
  • Reliable measurement of medium to large dust concentrations
  • Space-saving and easy installation
  • Transmission measuring principle opens up a wide range of applications
  • Also for use under extreme sample gas conditions



  • Emission measurement of dry flue gases at the stack
  • Measurement of dry flue gases in the process
  • Corrosive flue gases, challenging gas matrix
  • Measurement of dry process gases


Technical Data:

Measuring principle Transmission, contactless and in-situ measurement
Measuring variable Extinction, opacity, calibratable as dust concentration in mg/m³
Measuring range Opacity: 0 … 100%Extinction: 0 … 1.6Dust concentration: 0 … 5,000 mg/m³
Certified measuring range n/a
Ambient conditions Installation location: Indoor or outdoor installation**Temperature: -20 … +50 °C
Operating conditions in duct Temperature: Maximum 200 °C, optional: 500 °CRelative humidity: 0 … 95%, non-condensingRelative pressure:-50 … +10 hPa (standard)-50 … +50 hPa (optional)
Duct dimensions Inner diameter: 0.4 … 10 m
Interface* Analogue output: 1x 4 … 20 mA, maximum 400 Ohm, potential-free (various parameters adjustable)Digital output: 2x NC/NO, max. 60 VDC, 30 VAC, 0.5 A (various parameters adjustable)RS 485 Modbus RTU, USBStatus display: LED
Operation and display Software D-ESI 100*** orOperating unit D‑ISC 100
Control functions Automatic zero point and reference point measurement, manual contamination and linearity measurement (optional)
Light source LED

* Additional interfaces with D‑ISC 100 operating unit

** Weather protection cover required for outdoor installation

*** Enables remote access via web interface, PC with Windows operating system required


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